// by default, use all but one processor, but never more than 15.
-$iInstances = isset($aCMDResult['threads'])?$aCMDResult['threads']:(min(16,getProcessorCount())-1);
+$iInstances = isset($aCMDResult['threads'])
+ ? $aCMDResult['threads']
+ : (min(16, getProcessorCount()) - 1);
+
if ($iInstances < 1) {
$iInstances = 1;
warn("resetting threads to $iInstances");